One vertex per element, one color per generator, with an edge from x to x·s.
(3,7)(6,8)(11,15)(13,16)(17,18,21,24)(19,22,25,28)(20,23,27,30)(26,29,31,32)(34,38)(36,44)(39,41)(42,48)(2,5)(6,8)(19,25)(22,28)(26,31)(29,32)(33,34,37,38)(35,41,43,39)(36,45,44,40)(42,46,48,47)(1,2,4,5)(3,6,7,8)(9,10,12,14)(11,13,15,16)(17,18)(19,22)(20,23)(21,24)(25,28)(26,29)(27,30)(31,32)(33,34)(35,41)(36,40)(37,38)(39,43)(42,47)(44,45)(46,48)(9,11,12,15)(10,13,14,16)(17,19,21,25)(18,22,24,28)(20,26,27,31)(23,29,30,32)(33,35,37,43)(34,39,38,41)(36,42,44,48)(40,46,45,47)(1,3)(2,6)(4,7)(5,8)(17,20,21,27)(18,23,24,30)(19,26,25,31)(22,29,28,32)(33,36,37,44)(34,40,38,45)(35,42,43,48)(39,46,41,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.